payyer



(No Model.)

3 Sheets- Sheet 1.

J. G. PAVYEB. 8; J. WHITELAW;

Type Gas-ting Machine. No. 240,173. Patented April 12,1881.

(No Model.) 3 Sheets-Sheet 2.

J. G. PAVYER 85 J. WHITELAW.

Type Casting Machine. No. 240,173. Patented AprH 12,188l.

Izumtors m @241 f zi -N.PEKERS, FKOIO-LITHQGRAPNER. WASHINGYON D c (No Model.) 3 Sheets-:Sheet 3.

J. G. PAVYER & J. WHITELAW Type Casting Machine.

No. 240.173.- Patented April 12, 1881 At test. Imerwrs.

MPETERS. PHOTO-LITMOGRAPMER, WASHINGTON D c.

UNITED STATES PATENT OFFICE.

JAMES G. PAVYER AND JAMES WHITELAW, OF ST. LOUIS, MO., ASSIGNORS OF ONE-HALF TO ST. LOUIS TYPE FOUNDRY, OF SAME PLACE.

TYPE-CASTING MACHINE.

SPECIFICATION forming part ofLetters Patent No. 240,173, dated April 12, 1881.

Application filed November 1, 1880. (N model.)

To all whom it may concern:

Be it known that we, JAMES G. PAVYER and JAMES WHITELAW, both of the city of St. Louis and State of Missouri, have invented certain new and useful Improvements in Type- Oasting Machines, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this specification.

[O The first part relates to the operation of the nipple-plate, by which it is removed from the nipple and mold after the casting of each type.

The second part relates to the manner of attaching the nipple-plate to its carrying-arm.

1 The third part relates to the device for lubricating the nipple.

The fourth part relates to the construction of the mold, so as to cast the type without the customary jet.

The fifth part of our improvement relates to the construction of the matrix-holder.

The sixth part relates to the mechanism for operating the matrix.

In the drawings, Figure 1 is a perspective view of the part of a type-casting machine embracing our improvement, except that the driving mechanism is removed to exhibit the parts beneath. Fig. 2 is a detail perspective, showing the mold, nipple-plate, and nipple- 0 plate-carrying arm, with the end of the nipple. Fig. 3 isa detail perspective view of the inner side of the nipple-plate with the end of its carrying-arm and Fig. 4 is a top-edge view of the same. Fig. 5 is a perspective view of 3 5 the molds with the upper member raised and the nipple-plate in contact with the lower member. Fig. 6 is a perspective view of the molds when closed, with the nipple-plate and the nipple out of contact. Fig. 7 is a side view 0 of the connection between the upper end of the pump-rod and its working-beam. Fig. 8 is a side view of the driving mechanism and Fig. 9 is a top view of same; and Fig. 10 is an end view of same. Fig. 11 is a section 5 through one of the rims of the frictionwheels, showing an inserted band of leather, &c. Fig. 12 is a detail perspective, showing parts of the mechanism for operating the molds and the matrix. Fig. 13 is a side view, and Fig. 14 a front view, of the matrix-holder with the matrix. Fig. 15 is a side of the mechanism for operating the nipple-plate and the lubricating device; and Fig. 16is a front view of same. Fig. 17 is a detail perspective of end of matrix-spriug.

A is the base-frame of the machine, and B is the table.

0 is the vibrating plate carrying the mold, and oscillated by the usual means, namely, by a cam on a shaft of the machine engaging an anti-friction roller, 0, upon the vibrating plate, and by a spring beneath the table, which engages a downwardlyextending arm of the plate, the cam giving the movement toward the nipple, and the spring the reverse move- 6 ment.

D is the driving-shaft carrying a frictiondisk. D, engaging the periphery of a frictionwheel, E, upon a shaft, E. The shaft E carries, at the upper end, a friction-wheel, E engaging the side of the friction-disk F upon the cam-shaft F. The shaft- E turns in boxes G and G, and the shaft is capable of longitudinal movement in the box G to enable the friction-wheels E and E to be moved to or from the center of the friction wheels or disks D and F, so as to increase or diminish the speed of the cam-shaft F. It will be seen that the movement of the shaft E which would carry the wheel E toward the periphery of disk D would move the wheel E toward the center of disk F.

The upper bearing-box, G, of the shaft E is pivoted to an arm, H, of a hand-lever, H. The shaft turns in the bearing G, but is incapable of longitudinal movement in said bearing, so that the moving of the bearing G by the leverv H causes the longitudinal movement of the shaft E. The lever H is supported on frame H pivoted to the main frame at H, the arrangement being such that the wheel E can be moved into or out of contact with the disk F, so as to cause the machine to run or allow it to come to rest. The lever H plays beside a bar, I, having notches i in its top, and the 5 lever H has a drop-catch, h, engaging the notches to hold thelever to its adjustment and the shaft E to any place in which it may be put in regulating the speed. The catch it is connected to arod, h, and is lifted by a finger- 10o lever, h in a not uncommon manner. Fig. 10.)

The shaft F carries a cam, F which engages a roller, J, on a lever, J, attached to the lower end of a connecting-rod, J that is connected to the outer end of the workingbeam K of the jet-pump. The inner end of the working-beam has a socket, K, forming one member of a ball-and-socket joint, by which the pump-rod L is connected to the working-beam, the ball L of said joint being at the upper end of the pump-rod. The pumprod works in a guide, L and its lower end or plunger works in a pump-cylinder, L. We claim nothing new in the pump, except the ball-and-socket joint-connection KL between the pump-rod and its working-beam. The purpose ofthis connection is to allow theplunger to turn in the cylinder to prevent sticking or cutting in grooves, both of which it is subject to do where opened or lifted by a spring, as is customary.

The lever J is depressed at the free end by the cam F and is lifted by a spring, J, beneath it, the lifting being the effective stroke in ejecting the metal from the nipple, and the down-stroke of the lever causing the metal to flow into the well beneath the plunger to supply the quantity carried out in the jet in casting the type.

The cam-shaft F carries a cam, F which engages the anti-friction roller 0, that has hearing on the vibrating plate 0. The vibrating plate carries the type mold and the matrix, as usual. It oscillates on centers M, and has a downward projection or arm extending through the table and acted on by a spring to cause the return movement of the vibrating plate from the nipple after it has been carried inward by the cam F. We claim no noveltyin the form or manner of operating the vibrating plate, as they are as customary, and any detailed description would be superfluous.

The upper member of the mold N is lifted by the usual appliance as the vibrating plate moves away from the nipple, such appliance consisting of an inclined rod, N, seated at N on the table, and whose upper end is connected to a lever, N whose lower end is hinged to the vibrating plate. The upper end of the lever is connected, by a rod, N, to the upper member of the mold, all this being as customary, and needing no further description.

0 is a customary jet-nipple, from which the melted type-metal is ejected in the usual manner. We claim no novelty in this; but we have a novel appliance for lubricating the point of the nipple when the departure of the nipple-plate leaves it exposed.

The lllbI'lOfillOl: has an arm, P, which oscillates upon a standard, P, and whose end carries a lubricating-pad, P, which comes in contact with the nipple on the descent of the arm P. The arm P is actuated by the following means: P is a slotted lever hinged at one end to the fixed frame B, and the other end con- (See nected to the arm P hya rod, P O is a pin projecting from the edge of the vibrating plate 0 and working in the slot of the lever P, so as to cause the oscillation of the arm P, as before stated.

Q is the nipple-plate having a countersink and jet-hole, Q, in which countersink the point of the nipple fits when the nipple-plate is carried into contact with it. The nippleplate lies tightly against the inner side of the mold N when the type is cast, so as to close that end of the mold except for the small sprue-hole in the nipple-plate.

Heretofore it has been customary to construct the mold with side extensions on both members in which was formed a passage in shape of an acute truncated pyramid with its small end toward the mold proper, the stem of the type being cast in the mold proper and the sprue orjet being cast in theextension.

In our machine we dispense with the jet-extension and form the mold so that the nippleplate fits tightly against its inner side, so that the typeis cast Without anyjet. To avoid the formation of a sprue in the nipple-plate we countersink it so deeply at Q that the point of the nipple extends nearly or quite through it.

We will now describe the construction of our nipple-plate in connection with its holder, which forms another feature of our improvement.

The nipple-plate has an open longitudinal slot, Q at one end which fits on the shank of a headed pin or screw, R, of the holder-arm R, and has at the other end a hole, Q, to fit another headed pin or screw, R projecting from the arm R. To allow the placing of the plate upon the pins R R the pin R has a flat part, R and the nipple-plate is slotted at Q, to allow the passage of the flat part of the pin B into the pin-hole Q After the plate is put upon the pins it may he slipped along the pins away from the flattened part R when it will be held fast upon both pins. The motion of the nipple-plate carrier-arm is such that whenthe mold moves back from the nipple, the nipple-plate also moves back, but not to the same extent, so that the nipple-plate, when these parts are separated, holds an intermediate position between the nipple and the mold, out of contact with either, and this gives it a chance tocool. The nipple-plate arm is moved by the following means: it is a pin on arm R, which works in a slotted arm, S, of a bellcrank or cam lever, S, whose other arm, S is made adjustable and is slotted for the passage of the pin 0 of the vibrating plate. The arm R is supported on arock-shat't, R and the bell crank is fulcrumed to the frame B We will now describe theconstruction and operation of the matrix-holder.

T is a bar, recessed or seated at the upper end to receive the lower end of the matrix U, which is held in position in its seat by a ser rated block, T, hinged to one end of a beam ing bar, T whose other end is hinged to the bar T) nearer to its lower end.

'1. is a screw passing through the bar T and screwing into the bar T and serving to hold the block T firmly against the matrix.

The matrix-holder is not hinged to the plate 0 or the mold N, but is saddle-formed at its place of bearing T and rocks on a rib, O, of the mold-plate O,being held in place by a spring, V, which is of curved form, and one end, 2), of which is attached to the vibrating plate 0. The other endw, is made round to fit in the hole t in the holder-block T. Just outside the block T the spring has on its under side a lugm against which the toe W of the lever W is forced to press the matrix firmly against the outer face of the mold, the mold being constructed with guide-flanges for the matrix, as usual. This spring V and its connection to the matrix-holder and with the lever W are not new to our machine. The leverWis fulcrumed to the vibrating plate 0, and when the vibrating plate is in its outer position the lever hangs free and allows the matrix to be swung out from the mold; but the inward movement of vibrating plate brings the screw 7 at the lower end of the lever W in contact with a post, X, upon the fixed frame, and as the inward movement of the lower end of the leverWis arrested, its upper end moves with accelerated speed and forces the matrix fast against the mold. The matrix is moved away from the mold to draw it off the letter of the type by the toe Y of a cross-bar, Y, which presses against its lower end, T just before the mold flies open to discharge the type. The cross-bar Y is loosely pivoted to the end of a spring-rod, Z, and has at the end opposite to the toeY a screw, Y whose end at times bears against the lever W.

Z is a bracket fast upon the vibrating plate, in which the rod Z works longitudinally.

Z is a spiral spring surrounding the rod Z, and bearing at its outer end against the outer eye, Z ofthe bracket, while its inner end bears against an adjustable collar, Z upon the rod Z. The action of the spring is to push the rod inward, and by forcing in the lower end of the matrix-holder to force out its upper end and draw the matrix from the type. The rod Z has at its outer end a pivoted cam, Z which, by turning, may be made to bear against the outer side of the eye-lug Z and draw outward the rod Z, compressing the spring Z The operation of these actuating devices of the matrix is as follows: Supposing the type to have just beencast, the vibrating plate moves outward and relieves the pressure of the screw W upon the post X, and as the vibrating plate continues to move outward the lower end of the lever W ceases to press against the screw it, and consequently the spring Z is enabled to press the toe Y against the lower end, T of the matrix-holder, causing it to rock on its bearing upon the mold-rib U, and drawing the matrix almost straight outward from the mold. As the vibrating plate again moves inward the screw at the lower end of lever W comes in contact with the post X, and the screw Y comes in contact with the lever W, and the toe Y is held outward, while the upper end of the lever W presses the matrix firmly against the mold at the same time that the mold, nipple-plate, and the nipple are in close contact for the casting of a type.

F is a cam on the shaft F, which works on an anti-friction wheel upon the free end of the lever a, the cam acting to depress the lever. 12 is a spring, which lifts the lever as it is relieved from the pressure of the cam. This mechanism is connected with the valve which alternately opens andcloses the nipple; but we claim no novelty in these parts, and a detailed description of them would be superfluous.

We claim as our invention 1. In a type-casting machine, the combination, with nipple, nipple-plate, and mold, of the arm R, provided with means, substantially as described, for entirely disconnecting the nipple-plate from the nipple when the mold is thrown back.

2. The combination of arm R, having nippleplate Q, with nipple O and mold, the said arm I adapted, by means substantially as described,

to disconnect the said nipple-plate from said nipple, as set forth.

'3. The combination, with the nipple-plate Q and its carrying-arm R, of the two headed pins R R the plate having slots Q Q and pinhole Q and the pin R having a flat part, R for the purpose set forth.

4.. The combination, with thejet-nipple ot' a type-casting machine, of the automatic lubricating-arm P, constructed and arranged to operate substantially as set forth.

5. The combination, with the type-mold N, of the nipple-plate closing one end of the mold proper, and nipple O, traversing the plate and injecting the metal directly into the mold, substantially as set forth.

6. The matrix-holder, constructed with a hinged pressure-b1ock,T,held against the matrix by a bearing-block, T and screw T substantially as set forth.

7. The matrix-holder, constructed with a saddle, T rocking freely upon the mold-plate and supported in position substantially in the manner set forth.

8. The combination, with the matrix-holder, su 'iportingspring V, and lever W, of the spring-rod Z, with cross-bar Y,havingends Y Y constructed and arranged to bear against the matrix-holder and the lever W, respect ively, for the purposes set forth.

JAMES G. PAVYER. JAMES WHITELAW.

the

Witnesses SAML. KNIGHT, WILLIAM H. McGILL. 

